Harrisburg, PA Political Map | Democrat & Republican Areas in Harrisburg

By the BestNeighborhood data science team. Last updated May 2026.

Harrisburg is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.

 

About 77% of adults in the Harrisburg area typically vote, above the U.S. average of about 62%. Among adults in the Harrisburg area, ~38% vote Democratic, ~39% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.

How Harrisburg compares

Among cities within 25 miles, Harrisburg sits roughly in the middle of the political spectrum, with 20 neighbors leaning further in the place's direction and 117 leaning the other way.

Politically, Harrisburg sits close to the rest of Pennsylvania.

Politics vary noticeably by neighborhood within Harrisburg. The east side runs the most Democratic (D+19) and the northwest side runs the most Republican (R+54), a spread of about 73 points.

Why Harrisburg leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in the Harrisburg area. The lean here lands roughly where demographic data alone would predict.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Harrisburg, PA sits in the top tenth nationally on this measure.

Why turnout in Harrisburg looks the way it does

Turnout in the Harrisburg area sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.

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Sources and methodology

Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.

Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.